Closet-bowl



F. J. CLIFFORD AND L. A. PERRY.

CLOSET BOWL.

- APPLICATION FILED FEB. 1. 1919.

Patntd June 8, 1920.

3 SHEETS-SHEET I.

F. J. CLIFFORD AND L. A. PERRY.

CLOSET BOWL.

APPLICATION man FEB. 1, 1919.

1 342 499; PdtentedJune 8, 1920.,

3 SHEETS-SHEET 2.

UNITED STATES PATENT OFFICE.

FREDERICK J. CLIFFORD AND LINDON A. PERRY, OF CHICAGO, ILLINOIS,ASSIGNORS TO CHICAGO POTTERY COMPANY, OF CHICAGO, ILLINOIS, ACORPORATION OF NEW JERSEY.

CLOSET-BOWL.

Original application filed January To all whom it may concern:

Be it known that we, FREDERICK J. CLIF- norm and LINDoN A. PERRY,citizens of the United States, residing in Chicago, inthe county'of Cookand State of Illinois, have invented a new and useful Improvement inCloset-BoWls, of which the following is a specification.

This invention relates in general to the manufacture of closet bowls andhas for its object broadly the economic provision of a bowl of improvedmanufacture and con struction. This application is a division of ourapplication Serial No. 213,131, filed January 22, 1918, for improvementsin closet bowls and the art of forming same.

A principal object of the present invention is the provision of aprocess more simple than the present generally used process termedovercasting, and including first the casting of certain minor partsof'the closet body and later the casting about these parts of theremainder of the body. The use of the overcasting process has resultedin considerable useless expense which our present invention aims toeliminate. The casting of material upon previous cast material in thisprocess not infrequently results in cracking because of the difference1n degree of dampness, the consequent uneven drying setting up crackingstrain in the material. Moreover, the inner drier parts tend to absorbmoisture from the outer parts and thus interfere with the normal dryingand shrinkage. On this account the overcasting process requires bothahigh degree of skill in the preparation of the slip and also in thecasting operation. It' is therefore a purpose of the present inventionto provide a process which will not require the casting. of one partupon another and the provision also of a process wherein the operationsmay be successfully performed by the usual available labor and withoutthe necessity of the high skill and care needed in the overcastingprocess.

A still further purpose of the invention is the provision of a processfor casting closet bowls and-the like which will insure even, rapiddrying of the body after being cast and this without danger of thecracking of the body through uneven shrinkage.

Another object of the invention is the provision of a closet bowl havinga large Specification of Letters Patent.

Patented June 8, 1920.

water surface and a deep water seal and at the same time a powerfulsiphon action at the trap. I

A still further object of the invention is the provision of a closetbowl wherein all of the parts will be accessible to the persons wor'kingthereon after casting, in order that any slight defects or imperfectionsmay be corrected as the work progresses.

Numerous other objects and advantages of the invention will be apparentas it is better understood from the following dethe line 5--5 of Fig. 4;

F ig, 6 is a perspective view of the female tongue forming mold part;

Fig. 7' is a similar view of its companion; and

Fig. 8 is a perspective view of the partition tongue before assemblingin the closet bowl aswill be later described.

For the purposes of illustrating our invention we have shown a closetbowl of the general siphon action wash-do-wn type, in which saidinvention is embodied. It will be manifest, however, as theinvention isbetter understood that it is by no, means restricted, to closet bowls ofthis type or character.

Referring to Fig. 1, reference character '10 designates the outerencompassing and a siphon trap comprising a horizontal passage 18extending from the rear toward the front, an up-passage 19 extendingsharply up near the front, a down-passage 20 at the front, and ahorizontal return passageway 21 communicating with the outlet 13.

.It will be noted from the drawing that the outer wall of the bowl andthe partitions forming these passageways are all of single wallconstruction and of substantially uniform thickness. This constructionis provided by casting the body with a web 22 closing the space withinthe outer wall 12. This web is connected in the present instance at therear of the bowl at 23 with the rear portion of the outer wall andthence extends substantially horizontally to 24 adjacent the front partof the closet. From the point 24 the web extends up at almost a rightangle, being curved into substantial parallelism with the front part ofthe wall, it being understood, however, that these parts merge at thesides. The web extends, when the body of the bowl is cast, up to a point25 where it joins thev outer bowl wall. The portion indicated by dottedlines 26 is cut out with a knife or other implement while the body ofthe bowl is still soft and a tongue orbasin forming partition 27 isinserted connecting at the point 25 with the front wall and extendingdown in engagement with said wall to its rear end. This tongue is shownin detail in Fig. 8, and it will be understood that all of the edge fromthe adjacent points 28 around its remote end are in contact with andmerge into the adjacent face of the outer wall. A

The outlet of the basin is formed between the concave edge 29 betweenthe points 28 and the inner face of the outer wall. The tongue 27 isprovided with a beveled edge 31 in order that the union between thisedge and the inner face of the outer wall can be neatly andexpeditiously made without the employment of a substantial amount ofconnecting material. Inasmuch as the trap forming spoon or partition andthe basin forming partition or tongue are of single thickness it ispossible to reduce the space occupied by the trap and to give to thetrap forming spoon and to the tongue the shape shown, permitting thetongue 27 to be sharply downwardly inclined and the -location of theparts to be such that a large water surface and deep water seal isprovided within the bowl to minimize soiling and sewer gases.

Particular attention is directed to the shape ofthe trap forming spoonwhich provides, as will be evident upon viewing the drawing, a' sharpstrong siphon action greatly increasing the efliciency of the bowlinservice and making it diflicult to clog,

and the trap can be provided without requiring that the outer wall bebulged at any points with resulting depressions" that must be closed bypanels orleftin unsightly conditions.

The molds for making this bowl are shown in Figs. 3 to 7, only the moldparts required for the body being shown since our 42 and having a body44 extending down into the opening between them but not reaching thebottom. The rear side 45 of."

this mold part is spaced from the adjacent surface 46 at the rear of themolds a distance equal to the thickness of the outer wall at this pointand the forward face 47 of the core part is spaced from the adj acentvface 48 of the outer mold parts a distance:

greater than the thickness of the outer wall at the front by thethickness of the spoon member and by a distance equal to the passageway20, the two surfaces approaching;

each other at 49 to provide the outer wall part 51 as indicatedinFig. 1. The main mold part therefore provides a single wall at therear of the closet and a double wall adjacent the front, the edges ofthe double wall merging into the single wall at the sides and top of thepassageway. The core provides boththe horizontal and upright parts ofthe spoon member, it being understood that slip is poured into therecess52 of the core-partand flows out through a hole 53 into the spaceto receive the casting.

In Figs. 6 and 7 the mold parts for the tongue 27 are shown consistingof a lower part 54 and an upper part 55 providing a space between themequal to the thickness of the tongue 27.

It is believed that only a brief further description of the process willbe necessary in view of the earlier description. The'mold parts 41, 42and44 are assembled as shown .in Fig. 4 and slip is poured into themold. At or about the same time the mold parts 54 V and 55 are joinedand other slip poured between them. These two pouring operations providethe body of the bowl and after this casting is complete the partindicated by dotted lines 26 is cut away by aknife or other suitableinstrument and the tongue 27 positioned, the contacting surfaces beingprovided with slip to make the partsproperly join. The edges engagingthe inner surface of the outer wall part of the body are then workedinto the inner surface of the wall by molding so that the whole insideof the basin presents a smooth unbroken 5 curve. Should any slight linesof juncture appear as a result of these operations they are within thebowl where they are not readily detected, particularly after glaze hasbeen applied.

It is thought that the invention and many of its attendant advantageswill be understood from the foregoing description, and it will beapparent that various changes may be made in the form, construction andarrangement of the parts without departing from the spirit and scope ofthe invention or sacrificing all of its material advantages, the formhereinbefore described being merely a preferred embodiment thereof.

We claim:

.= 1. The process of making a closet bowl which includes the followingrelated steps; casting the outer body wall and the trap forming spoon,and thereafter positioning a v basin forming tongue or partition abovesaid said web into a trap forming spoon by cutting away a part of saidweb to provide a trap passage therethrough.

4. The process of making a closet bowl which includes the followingrelated steps: 40 casting the outer vertical walls with a crossconnecting web, the mainpart of which is shaped to provide a trapforming spoon, cutting away the material of said web to leave a trapforming spoon, and separately casting a tongue or partition andpositioning the same above said spoon to form the bottom of the bowlbasin and the top of the Lip-passage of said trap.

5. The process of making a closetbowl which includes the followingrelated steps: the casting of the outer walls of the bowl with a crossconnecting web, the cutting away of said web to provide a passagetherethrough and to form a partition extending part way across the bowl,and casting separately a second partition and positioning said partitionto extend part way across the bowl in the opposite direction, one ofsaid partitions forming a part of the bowl basin and the other the trapforming spoon.

6. A set of molds for forming a closet bowl, comprising outer moldparts, a core part extending into and part way through said outer moldparts, said outer mold parts .65 and said core part forming together theouter vertical wall of the bowl and the trap forming spoon integraltherewith, and moldsfor forming a partition tongue fitting said outermold wall above said trap.

FREDERICK J CLIFFORD. LINDON A. PERRY.

